DFRobot FireBeetle 2 ESP32-E IoT Microcontroller (Supports Wi-Fi & Bluetooth)

The DFRobot FireBeetle 2 ESP32-E is a ultra-low-power IoT microcontroller board featuring the dual-core ESP32-E processor with integrated Wi-Fi 802.11 b/g/n and Bluetooth 5.0 connectivity, specifically engineered for battery-powered IoT applications requiring extended operational lifespans. Professional IoT developers, embedded systems engineers, and electronics hobbyists utilize this platform to prototype smart home devices, wireless sensor networks, environmental monitoring systems, and connected wearables that demand minimal power consumption without compromising processing capability. This board solves the critical challenge of balancing computational performance with energy efficiency in remote IoT deployments where battery replacement or charging infrastructure is impractical.

Product Overview

The FireBeetle 2 ESP32-E integrates Espressif's latest ESP32-E dual-core processor running at 240MHz with 520KB SRAM and 16MB flash memory, delivering robust computational power for complex IoT algorithms while maintaining exceptional power efficiency through advanced sleep modes and dynamic frequency scaling. The board incorporates DFRobot's proprietary power management circuit that reduces idle current consumption to approximately 10 microamps, enabling multi-year battery operation in deep sleep mode. Built-in Wi-Fi and Bluetooth 5.0 modules provide dual connectivity pathways, allowing seamless switching between long-range Wi-Fi for gateway communication and low-energy Bluetooth for local device mesh networking.

The development environment leverages the Arduino IDE and MicroPython, providing accessibility to both beginners and experienced developers. The board features 20 GPIO pins with support for PWM, SPI, I2C, and UART protocols, enabling straightforward integration with sensors, actuators, and peripheral devices. DFRobot's FireBeetle ecosystem includes optimized libraries and comprehensive documentation specifically addressing power optimization techniques, making this platform ideal for commercial IoT product development where energy efficiency directly impacts profitability and user satisfaction.

Key Specifications

Specification	Details
Product Type	Ultra-Low-Power IoT Microcontroller Board
Brand	DFRobot
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
Processor	Dual-Core ESP32-E @ 240MHz
RAM	520KB SRAM
Flash Memory	16MB
Wireless Connectivity	Wi-Fi 802.11 b/g/n, Bluetooth 5.0
GPIO Pins	20 pins with PWM, SPI, I2C, UART support
Operating Voltage	3.3V to 5.5V
Deep Sleep Current	Approximately 10 microamps
Board Dimensions	43mm x 38mm
Development Environment	Arduino IDE, MicroPython

Key Features

• Ultra-Low Power Consumption with advanced sleep modes reducing idle current to 10 microamps, enabling battery-powered deployments lasting months or years without recharging
• Dual-Core Processing at 240MHz with 520KB SRAM for executing complex algorithms simultaneously on separate cores, improving multitasking efficiency in real-time IoT applications
• Integrated Wi-Fi and Bluetooth 5.0 providing dual connectivity options for gateway communication, local mesh networking, and seamless protocol switching based on application requirements
• 20 GPIO Pins with comprehensive protocol support including PWM, SPI, I2C, and UART enabling straightforward integration with analog sensors, digital devices, and communication modules
• 16MB Flash Memory for storing large firmware images, machine learning models, and configuration data without requiring external storage solutions
• Arduino IDE and MicroPython Compatibility reducing development time and enabling rapid prototyping with extensive community libraries and code examples
• Compact Form Factor at 43mm x 38mm fitting into space-constrained IoT devices, wearables, and embedded applications without design compromises

Applications and Use Cases

• Smart Environmental Monitoring Systems deploying multiple sensor nodes across agricultural fields or industrial facilities, transmitting temperature, humidity, and air quality data via Wi-Fi to cloud platforms while operating on solar-charged batteries for months
• Wireless Wearable Health Devices including fitness trackers and health monitors utilizing Bluetooth 5.0 to communicate with smartphones while maintaining 7-10 day battery life through aggressive power management
• IoT Home Automation Gateways serving as local hubs that collect Bluetooth signals from multiple smart home devices and relay aggregated data to cloud services via Wi-Fi, reducing latency and improving reliability
• Industrial Asset Tracking Solutions implementing GPS-enabled trackers that periodically transmit location data via Wi-Fi when near infrastructure, then switch to low-power Bluetooth mesh for local proximity detection in warehouses
• Smart Water and Gas Meter Readers utilizing cellular or Wi-Fi connectivity to transmit consumption data while maintaining multi-year battery operation in remote installations without external power sources
• Wireless Sensor Networks for environmental research deploying distributed nodes across forests or marine environments that collect data locally and synchronize via Wi-Fi when connectivity becomes available

How to Use

Begin by installing the ESP32 board support package in Arduino IDE through the Boards Manager, then connect the FireBeetle 2 ESP32-E to your development computer via USB. Select the appropriate board configuration and COM port, then upload the provided example sketches demonstrating Wi-Fi connectivity, Bluetooth pairing, and power management techniques. The board ships with pre-loaded bootloader firmware, eliminating the need for additional flashing tools or complex initialization procedures.

For production IoT applications, implement DFRobot's power optimization libraries to configure sleep modes, adjust CPU frequency dynamically based on processing demands, and manage Wi-Fi radio duty cycles to maximize battery longevity. Utilize the dual-core architecture by assigning sensor data collection to one core while the other handles Wi-Fi communication, preventing blocking operations that waste power. Test your firmware extensively using the integrated power profiling tools available in Arduino IDE to measure current consumption across different operational states, then fine-tune sleep durations and transmission intervals to achieve target battery life specifications.

Frequently Asked Questions

What is the actual battery life I can expect with the FireBeetle 2 ESP32-E in a typical IoT application?

Battery life depends heavily on your specific usage pattern, but with proper power optimization, a 2000mAh battery can power a sensor node transmitting data every 10 minutes for approximately 6-8 months. Deep sleep current of 10 microamps means the board consumes minimal power between transmissions. If you increase transmission intervals to hourly readings, battery life can extend to 1-2 years. We recommend using our power profiling tools to measure your exact current consumption across wake, transmit, and sleep states to calculate precise battery life for your application.

Can I use both Wi-Fi and Bluetooth simultaneously on the FireBeetle 2 ESP32-E?

Yes, the ESP32-E supports simultaneous Wi-Fi and Bluetooth operation through shared radio hardware managed by the internal coexistence engine. However, simultaneous active transmission on both protocols will increase power consumption significantly. For optimal battery life, implement a switching strategy where the device primarily operates in Bluetooth mode for local communication, then periodically activates Wi-Fi to synchronize data with cloud services. The dual-core processor allows one core to manage Bluetooth connections while the other handles Wi-Fi communication independently.

Is the FireBeetle 2 ESP32-E suitable for industrial IoT applications requiring extended temperature ranges?

The standard FireBeetle 2 ESP32-E operates reliably between 0°C to 40°C. For industrial applications requiring extended temperature ranges, DFRobot offers industrial-grade variants rated for -40°C to 85°C operation. Contact our technical support team to discuss your specific environmental requirements and we can recommend appropriate variants or suggest thermal management solutions for your deployment conditions.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
• Expert Team: Our technical team validates every product before listing
• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
• Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

Buy DFRobot FireBeetle 2 ESP32-E IoT Microcontroller (Supports Wi-Fi & Bluetooth) Online in India

Purchase the DFRobot FireBeetle 2 ESP32-E IoT Microcontroller (Supports Wi-Fi & Bluetooth) online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on DFRobot FireBeetle 2 ESP32-E IoT Microcontroller (Supports Wi-Fi & Bluetooth) with fast shipping and expert support.

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